{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "Additionally , when considering the subjects ' adverse effects and the results of the blood and urine tests over the 4 - week trial period , the dose of 400 mg Polycalcium showed efficacy for improving bone metabolism and was well tolerated and safe ."}
{"Chemical": ["Polycalcium"]}